# Copyright 2024 Superlinked, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from superlinked.framework.common.dag.context import ExecutionContext
from superlinked.framework.common.data_types import Vector


class WeightArithmetics:
    @staticmethod
    def get_weight_abs_sum(
        context: ExecutionContext,
        node_ids: list[str],
    ) -> float:
        return sum(abs(context.get_weight_of_node(node_id)) for node_id in node_ids)

    @staticmethod
    def apply_vector_weight(
        vector: Vector, node_id: str, context: ExecutionContext
    ) -> Vector:
        weight = context.get_weight_of_node(node_id)
        return vector * weight
